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(No EEQdeL) G. W. WERNER. PADLOGKI.

No. 556,232. Patented Mara-10, 1 896.

UN TED STATES PATENT OFFI E.

GEORGE IV. \VERNER, OF LANCASTER, PENNSYLVANIA, ASSIGNOR TO EDIVARD T.FRAIM, OF SAME PLACE.

PAD LOCK.

SPECIFICATION forming part of Letters Patent No. 556,232, dated March10, 1896.

' Application filed June '7, 1895. serial No. 551,986. (No model.)

T at whom it mag concern.-

Be it known that I, GEORGE W. \VERNER, a citizenof the United States,residing at Lancaster, in the county of Lancaster and State ofPennsylvania, have invented certain new and useful Improvements in aPadlock Locking WVithout a Key; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

This invention'relates to improvements in a padlock of that classadapted to be locked automatically or without a key onto a fixed stapleor eyebolt within a recess in thecase,

its shackle or looking bolt moving in a circular arc and passing throughthe opening of said staple or eyebolt.

The object of the invention is the production of a compact, neat andefficient padlock, as well as to simplify and cheapen its construction.

The elements of the invention, as well as their arrangement andoperation, will severally and distinctly appear in the followingdescription and be separately and collectively set forth in the claims.

The purposes of the invention are attained by the mechanism and devicesillustrated in the accompanying drawings, similar reference letters andfigures designatinglike parts throughout the several views, in which-Figure 1 is plan of a padlock embodying the elements of the invention.Figs. 2 and 3 are similar views with the top plate or cap removed,showing the mechanism in locked and unlocked positions. Fig. 4 is asimilar view to Fig. 3, showing a modification of the shackle or boltreleasing device. Figs. 5 and 6 are completed top views, respectively,of Figs. 3 and 4; and Figs. 7, 8, 9, 10, 11, and 12 are views showingdetails in the construction and operation.

The case A of the lock is preferably circular in plan or cylindrical inform, comprising the base portion A and the top portion or covering-capA secured together in any approved manner. In this instance pins a ofthe base are passed through orifices in the cap and riveted thereon, asshown in Fig. 1, and a indicates the joining line. (Best shown in Figs.5 and 6.) The body of the case is provided through its edge andextending radially aprescribed distance toward the center thereof with aU-shaped recess A to receive the head of the eyebolt or the forward endof the staple referred to in the preamble hereto 'and indicated bydotted lines and circles I in Figs. 1, 2, 3 and at.

In the forward end of the recess through the right-hand wall thereof isan angular aperture a for the passage of the shackle-bolt in performingits functions, and directly opposite, in the left-hand wall, is asimilar aperture, (L to receive and hold the forward end of said boltwhen the lock is closed, while from the said left-hand aperture, alongthe horizontal center line and extending a prescribed distance beyondthe middle of the curved portion of the recess-wall, is an elongatedslot (0 for the passage of the blade or cam projection of theshackle-lever, to be hereinafter described. a designates a pinprojecting upward from a boss centrally located on the bottom of thecase on which said shackle is pivoted, and a designates a pivotpinproperly located and also projecting upward from said bottom to supportthe lockin g tumbler or pawl and the actuating-spring, both to behereinafter described Again, a and a designate circular orifices throughthe top and bottom plates of the case and properly located to pivotallyreceive the ends of the well known slotted key cylinder A (shown inelevation in Fig. 10,) and the orifice a in the top plate A isdownwardly clongated to form a rectangular aperture (t for the passageof the blade of the well-known unlocking-key A (Shown in elevated planin Fig. 11.

Fig. 7 shows the shackle in elevation as it appears when viewed from theright and dctached from the position indicated in Fig. 2.

As shown in the drawings, the shackle B is practically a lever havingthree arms or wings I) h b radiating or, curving from a common center,where an orifice b", engaged by the pin a before mentioned, serves topivot the shackle in place. The outer end, B, of the arm Z) in fillingthe area of the apertures a a, before mentioned, curvingcircumferentially with the case and having a prescribed length,constitutes the bolt or securing-shaft of the lock. The arm I), in curving downward a prescribed distance and lying close to the left-hand sideof the key-cylinder, is adapted to be engaged by the keyblade and to beraised thereby, withdrawing the belt or opening the lock. The arm bcurving upward and extending to the left, has its upper face in theplane of the l1orizontal center line of the ease and its under face cutaway to the dotted line 2 in Fig. 7, making it thinner, permitting it topass through the slot a before mentioned, into the U-shaped recess A,also before mentioned, where by coming in contact with the staple oreyebolt, likewise before mentioned, it is adapted to be pressed downwardinto the case, releasing the shackle or looking the bolt. At aprescribed point in the vertical portion thereof the back of the arm Z)of the shackle is provided with a notch 11 to be engaged by a hookprojection at the upper end of a pawl or tumbler lever yet to bedescribed, holding the shackle back or in unlocked position, and at thebend thereof is a notch If, to be engaged by the upper face or theangular edge of said upper end of the pawl, holding the shackle closedor in locked position, while underneath at a prescribed point is aprojection 71 to ride on the bottom plate of the case, holding theshackle-bolt in horizontal position as it moves back and forth inperforming its functions. A tumbler 0, having two arms 0 joined togetherat one end and provided with an orifice 0 through the body thereof atthe juncture of the arms, is pivoted through said orifice onto the pina, before mentioned.

The arm 0, constituting the pawl, is provided at its free end with adownwardly-projectin g leg 0, adapted to ride on the bottom plate of thecase, keeping the arm horizontally in place as it moves to and fro inperforming its functions. At this end, as well as along the adjacentedge of this leg, is a slight side-curving projection forming asmoothly-working hook adapted to engage the notch b before mentioned,holding the shackle in unlocked or opened position, (best shown in Fig.3,) and the angular edge of said hook is adapted to engage the notch Z),also before mentioned, holding the shackle firmly locked or in closedposition, (see Fig. 9,) while the arm passing horizontally above theupper face of the shackle, curving over and about the key-cylinder andextending along the left-hand side thereof to a point at a prescribeddistance below the lower end of the shackle-arm b, where its lower end 0in being engaged by the key-blade, is adapted to be raised therebybefore coming in contact with said shackle-arm, (see Fig. 2,)disengaging the upper end of the pawl-arm Cfrom the notch Z), therebyreleasing the shackle, when its bolt 13 may be readily withdrawn and thelock opened by a continued rotation of the key, its blade changing fromthe position indicated in Fig. 2 to that indicated in Fig. 3. A notch cis placed at a prescribed point in the under edge of the arm 0 forming astop to prevent the key-blade from turning backward to open the lock,and a twoarmed coiled spring 0", Fig. 9, placed in position on the pina, and underneath the tumbler C, as shown, its arm o engaging the backof the tumbler and its arm 0 resting against the side of the case,serves to keep the pawlarm 0 in close contact with the shackle-arm, asshown, always forcing engagement of the pawl-hook with eithershackle-notch D or U, accordingly as the shackle-bolt is in eitherclosed or opened position.

)Vhen so desired the cam projection or the arm b may be omitted from theshackle-lever, as is plainly indicated in Fig. i. In this constructionthe slot a opening into the recess A, before mentioned, is likewiseomitted, and an aperture 3 opening into said recess being arrangedadjacent to the inner face of the bottom plate, and a sliding plate D,Fig. 12, may be placed in position within the case. (See Fig. 4.) Thisplate has an upper end projection 6 passing through the slot 3 tocontact with the staple. In the body of the plate are slots (Z (Z toreceive, respectively, the shackle pivot'pin and the key-eylinde:r,allowing freedom of motion down and up to the plate. Onto a sideextension at the upper left-hand angle of the plate is rigidly secured aperpendicular projection or lug (1, to press onto the shackle-lever armI), releasing the shackle when its bolt is to be shot or the lock;closed. To the lower end of the tumbler-pawl leg 0 is rigidly secured aflat strip or foot 4, (indicated by dotted lines in Fig. 4,) adapted toengage the upper right-hand angle of the plate when it occupies theposition indicated by dotted lines in Fig. 4, holding said platedownwardly in place when the lock is closed. (Best shown in Fig. 12.)

It will here be observed that the construction just described andillustrated in Figs. 4, 0, and 12 is a full and complete equivalent tothat hereinhefore set forth, and that other changes may be made or formsused, especially as to the introduction of the cam projection into thecase'reeess for the releasing of the shackle or looking bolt, withoutdisclosing any new idea or departing from. the spirit of the invention.

Having thus fully described the elements and ascertained the nature ofthis my invention and set forth the manner in which .it isperformed,what I do consider new, and. desi re to secure by LettersPatent, is-

1. In a padlock having a case with a radial. recess extending throughthe peripheral. edge thereof and an opening through the wall. ol. theease into said recess, said case having a centrally-pivoted shackle witha bolt passing over the open end of the recess and mechanism provided tohold the shackle open, a projection from within said case and passingthrough said opening into said recess to auto inatioally release saidshackle, substantially as and for the purpose hereinbefore set forth.

2. A padlock comprising a case having a U-shaped recess radiallyextending through the edge thereof, a centrally-pivoted shackle withinthe case and having a bolt extending peripherally across the open end ofsaid recess, notches at prescribed points in a side edge of said shackleand a pawl provided with a projecting point to engage said notches, aspring provided with an arm engaging the back edge of said pawl, armsprojecting from the shackle and pawl with a key provided for withdrawingthe shackle-bolt, and a projection into the case-recess provided forreleasing the 1 5 GEO. W. WERNER. lVitnesses:

CHAS. R. KLINE, DANIEL l'I. IIERR.

